1 files changed, 118 insertions, 0 deletions
diff --git a/libcc1/compiler.cc b/libcc1/compiler.cc
new file mode 100644
index 0000000..fede849
--- /dev/null
+++ b/libcc1/compiler.cc
@@ -0,0 +1,118 @@
+/* Compiler handling for plugin
+   Copyright (C) 2014-2021 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include <cc1plugin-config.h>
+#include <string>
+#include <sstream>
+#include "libiberty.h"
+#include "compiler.hh"
+#include "xregex.h"
+#include "findcomp.hh"
+#include "intl.h"
+
+// Construct an appropriate regexp to match the compiler name.
+static std::string
+make_regexp (const char *triplet_regexp, const char *compiler)
+{
+  std::stringstream buf;
+
+  buf << "^" << triplet_regexp << "-";
+
+  // Quote the compiler name in case it has something funny in it.
+  for (const char *p = compiler; *p; ++p)
+    {
+      switch (*p)
+	{
+	case '.':
+	case '^':
+	case '$':
+	case '*':
+	case '+':
+	case '?':
+	case '(':
+	case ')':
+	case '[':
+	case '{':
+	case '\\':
+	case '|':
+	  buf << '\\';
+	  break;
+	}
+      buf << *p;
+    }
+  buf << "$";
+
+  return buf.str ();
+}
+
+char *
+cc1_plugin::compiler::find (const char *, std::string &) const
+{
+  return xstrdup (_("Compiler has not been specified"));
+}
+
+char *
+cc1_plugin::compiler_triplet_regexp::find (const char *base,
+					   std::string &compiler) const
+{
+  std::string rx = make_regexp (triplet_regexp_.c_str (), base);
+  if (verbose)
+    fprintf (stderr, _("searching for compiler matching regex %s\n"),
+	     rx.c_str());
+  regex_t triplet;
+  int code = regcomp (&triplet, rx.c_str (), REG_EXTENDED | REG_NOSUB);
+  if (code != 0)
+    {
+      size_t len = regerror (code, &triplet, NULL, 0);
+      char err[len];
+
+      regerror (code, &triplet, err, len);
+
+      return concat ("Could not compile regexp \"",
+		     rx.c_str (),
+		     "\": ",
+		     err,
+		     (char *) NULL);
+    }
+
+  if (!find_compiler (triplet, &compiler))
+    {
+      regfree (&triplet);
+      return concat ("Could not find a compiler matching \"",
+		     rx.c_str (),
+		     "\"",
+		     (char *) NULL);
+    }
+  regfree (&triplet);
+  if (verbose)
+    fprintf (stderr, _("found compiler %s\n"), compiler.c_str());
+  return NULL;
+}
+
+char *
+cc1_plugin::compiler_driver_filename::find (const char *,
+					    std::string &compiler) const
+{
+  // Simulate fnotice by fprintf.
+  if (verbose)
+    fprintf (stderr, _("using explicit compiler filename %s\n"),
+	     driver_filename_.c_str());
+  compiler = driver_filename_;
+  return NULL;
+}